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公开(公告)号：US6034330A
公开(公告)日：2000-03-07
申请号：US37939
申请日：1998-03-10
申请人： Hugh Michael Pratt
发明人： Hugh Michael Pratt
摘要： A load insulator having an elongated, load bearing, electrically insulating body extending between and coupled to opposite metal lugs, for coupling the load insulator in a loaded line, has an electrically insulating cover formed on the outside of the body and extending over and completely covering each of the pair of metal lugs at the opposite ends of the body. The insulating cover, which is of integral, one-piece construction, and may be made of polyurethane, is formed within a mold during construction of the load insulator by leaving a void within the mold around the opposite metal lugs and the body before introducing plastic into the mold, to form the insulating cover. Covering each of the opposite metal lugs as well as the body with the insulating cover forces high voltage-produced currents through the inside of the load insulator by preventing current creep around and flashing over the outside of the insulator body. The integral, one-piece construction of the insulating cover prevents rain water and other moisture from seeping into the inside of the load insulator. The outer surface the body is provided with plural ribs or sheds, at least some of which are substantially larger than and protrude further out than intervening ribs of smaller size to prevent rain water and dirt from forming a continuous current path over the outer surface of the body.
摘要翻译： 负载绝缘体具有细长的负载承载电绝缘体，其在相对的金属凸耳之间延伸并联接到相对的金属凸耳，用于将负载绝缘体耦合在负载线中，具有形成在主体外部并延伸并完全覆盖的电绝缘盖 每一对在身体两端的金属凸耳。 在构造负载绝缘子的过程中，通过在引入塑料之前在模具周围留下相对的金属凸耳和主体周围的空隙，在模具内形成具有整体的单件结构并且可由聚氨酯制成的绝缘盖 进入模具，形成绝缘盖。 覆盖每个相对的金属凸耳以及具有绝缘盖的主体通过防止电流蠕变并在绝缘体的外部闪烁而迫使通过负载绝缘体内部的高电压产生电流。 绝缘盖整体的一体式结构防止雨水和其他水分渗入负载绝缘子的内部。 主体的外表面设置有多个肋或棚，其至少一些比较小尺寸的中间肋大得多并突出，以防止雨水和污物在上述的外表面上形成连续的电流路径 身体。
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公开(公告)号：US5745042A
公开(公告)日：1998-04-28
申请号：US687156
申请日：1996-07-24
申请人： Hugh Michael Pratt
发明人： Hugh Michael Pratt
摘要： A load insulator 2, for interposition into a loaded line, comprises a plurality of mechanical links 4 connected together to form a chain, and an electrical insulator 8 arranged between a pair of adjacent interlocked links 10,12 in the form of an insert of insulative material to electrically isolate the links 10,12 of the pair from each other. A load sensing device may be provided for sensing the strain on the mechanical link. A measuring device 24 for measuring the resistance of the insulator 8 is provided to check the electrical condition of the load insulator, whilst a recording and indicating device allows for recording of electrical strikes and provide a lifetime expiry indicator.
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